QSC Audio MD-SP215 - Manual

Features of the MD Powered Series
• Useable output to 24 Hz
• Sixteen 3/8"-16 threaded attachment points address all
suspension requirements
• Available in either black or white finishes
• Foam backed, powder coated, heavy gauge steel grille
Features of the Patented* PM1400 Power Module
• Provides 1400 watts of continuous power
• Class D switching technology
• Accepts balanced XLR input connector with pass-through connector
• Integrated active crossover and equalization electronics
• Internal limiters prevent over driving the system
The MD Powered Series subwoofers combine the
superb loudspeaker performance of MD Series
installation loudspeakers with the latest generation
of QSC’s amplification and signal processing
technologies. These models are designed to
complement the capabilities of MD Powered
full-range loudspeakers by extending frequency
response into and below the lowest octaves of the
audible range.
The MD-SP215 and MD-SP218 subwoofers
offer dual 15" or 18" front-loaded transducers,
respectively. Large centrally located vents with
radiused terminations eliminate port turbulence
and noise. Transducers feature technically advanced
4" voice coils assembled with proprietary high
temperature adhesives, vented ceramic magnet
assemblies and highly optimized motor design
to provide high linear excursion, low power
compression, flat frequency response and a very
low distortion figure.
Both models feature the PM1400 Power Module,
which offers state-of-the-art integration of
amplification and signal processing. See the rear
page of this specification sheet for further details.
MD Powered Series subwoofers offer exceptional
performance in a wide variety of applications,
including houses of worship, performing arts
facilities, hotels, casinos, night clubs, and sporting
facilities. For design/build contractors and
electroacoustic design consultants, MD Powered
Series subwoofers offer an effective solution to the
myriad of challenges encountered in the design
and implementation of permanently installed
sound reinforcement systems.
MD Powered Series
ModularDesign™ Subwoofers
MD-SP215 | MD-SP218
Specifications
MD-SP215 MD-SP218
Configuration Two 15" long-throw woofers Two 18" long-throw woofers
with 4" voice coils, aluminum with 4" voice coils, aluminum
demodulating ring demodulating ring
Frequency Response (-6 dB) 27 Hz - 100 Hz 26 Hz - 100 Hz
Frequency Range (-10 dB) 25 Hz - 110 Hz 24 Hz - 110 Hz
Maximum Output
Continuous
1 129 dB 131 dB
Peak 2 135 dB 137 dB
Amplifier Module
Power Output
3 1400 W
Input Sensitivity 1.2 Vrms (+4 dBu)
Input Clipping 7.5 Vrms (+19.5 dBu)
Input Impedance (Ω) 20k
Input Connector Balanced XLR female (Pin 1: Ground, Pin 2: +, Pin 3: -)
Output (loop-thru) Connector XLR male wired in parallel with input
Controls
Gain control, 100 Hz high-cut filter, Power on/off
Indicators Clip/Limit (red LED) / Signal (green LED) / AC Power (blue LED)
Protection Thermal limiting, on/off muting, AC inrush current limiting (< 12 A peak)
Operating Voltage Available in 120 V or 230 V (+15% / -40%)
AC Power Requirements 4
Pink Noise (6 dB crest factor) Idle < 0.5 A (< 100 BTU waste heat) / 1/8 power 2.5 A (570 BTU waste heat) /
1/3 power 5.0 A (1380 BTU waste heat) / Full Power 15.0 A (4010 BTU waste heat)
Typical Program Material 2.5 A (570 BTU waste heat)
at Full Power
Enclosure
Suspension Points
16 load-rated attachment points that accept 3/8"-16 threaded hardware
Finish Wear resistant textured paint, available in black and white (handles on black only)
Grille Powder-coated perforated steel
Dimensions (HWD) 26" x 40" x 23.3" 28" x 48" x 24"
(660 mm x 1016 mm x 591 mm) (711 mm x 1219 mm x 610 mm)
Weight 190 lb (86.2 kg) 210 lb (95.3 kg)
All amplifiers are FCC class B (conducted and radiated emissions), UL/CE listed
1) Calculated based on sensitivity and continuous amplifier power at onset of limiting
2) Calculated based on sensitivity of transducers and peak output capability of amplifier
3) The maximum sustained power at less than 1% clipping, averaged over the intended frequency range
4) Current values are for 120 V, for 230 V operation divide by 2